java实体类中的所有实例变量是否在数据库中持久化？

Question

实体类中的所有实例变量是否在数据库中持久化？或者实体中的某些变量是否可能是非持久性的

Answer 1

当然，您可以使用@Transient注释。例如：

class MyClass{

    private int id;
    private String name;

    @Transient
    private int identity;
}

这里，identity字段在数据库中是暂时的，而不是持久的

This means if a variable is marked @Transient then it won't be added in the database. it has no persistence representation of this variable in that hibernate session. After the session is closed these transient objects will be destroyed by garbage collection.